logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4581431 B1

PDFFull Text
Date of Patent:
Apr. 08, 1986

Filed:

Sep. 18, 1984

Process for purifying rubbery polymers

Applicant:
Inventors:

Yoshihide Yamazaki, Yokkaichi, JP;

Kazumi Uchimura, Yokkaichi, JP;

Satoshi Yamashita, Yokkaichi, JP;

Mikio Takeuchi, Yokkaichi, JP;

Assignee:

Japan Synthetic Rubber Co., Ltd., Tokyo, JP;

Attorney:

Oblon, Fisher, Spivak, McClelland & Maier

Primary Examiner:

Paul R Michl

Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
528494 ; 528499 ;
Abstract

A process for purifying a rubbery polymer by removing a catalyst residue from a rubbery polymer containing the catalyst residue obtained by polymerizing in slurry ethylene and an .alpha.-olefin or ethylene, an .alpha.-olefin and a non-conjugated diene in a poor solvent with a catalyst consisting of an organoaluminum compound and a transition metal compound, characterized in that the removal of the catalyst residue is conducted by water extraction consisting of

Find Patent Forward Citations

Yamazaki, Yoshihide. (1986). Process for purifying rubbery polymers (U.S. Patent No. 4581431). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4581431

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…